We're dividing 43872121 by 284 
We want to figure out the number of times 43872121 can be divided by 284.

Going ahead to step 1:
284 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 284

Step 2:
284 goes into 43 0 times with a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 43 and we're left with 43.
Take the next digit (8) from the dividend and append it to 43, then repeat: 438 / 284

Moving on to step 3:
284 goes into 438 1 times with a remainder of 154.
The next digit of our result is 1. 
Result so far: 1.0
If we take 284 away from 438, we end up with 154.
Include the next digit (7) from the dividend after 154, then repeat: 1547 / 284

Moving on to step 4:
1547 divided by 284 is 5 with a remainder of 127.
Write down 5 as next digit of the result. 
Result so far: 15.0
The remainder is 127 after subtracting 1420 from 1547.
Take the next digit (2) from the dividend and append it to 127, then repeat: 1272 / 284

Going ahead to step 5:
284 can be fit into 1272 4 times, resulting in a remainder of 136.
Use 4 as the next digit of our solution. 
Result so far: 154.0
Deduct 1136 from 1272 and we're left with 136.
Include the next digit (1) from the dividend after 136, then repeat: 1361 / 284

On to step 6:
284 can be fit into 1361 4 times, resulting in a remainder of 225.
The number 4 becomes the next digit in our result. 
Result so far: 1544.0
Subtract 1136 from 1361 to get 225.
Take the next digit (2) from the dividend and append it to 225, then repeat: 2252 / 284

On to step 7:
When dividing 2252 by 284, we get 7 with a remainder of 264.
Use 7 as the next digit of our solution. 
Result so far: 15447.0
Subtracting 1988 from 2252 leaves us with 264.
Fetch the next digit (1) from the dividend, attach it to 264 and continue: 2641 / 284

Moving on to step 8:
If we divide 2641 by 284, we get 9 and a remainder of 85.
Record the quotient 9 as the next digit in the result. 
Result so far: 154479.0
If we subtract 2556 from 2641, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 9:
The number 284 fits into 850 2 times, leaving a remainder of 282.
Write down 2 as next digit of the result. 
Result so far: 154479.2
The remainder is 282 after subtracting 568 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Going ahead to step 10:
284 can be fit into 2820 9 times, resulting in a remainder of 264.
Write down 9 as next digit of the result. 
Result so far: 154479.29
If we subtract 2556 from 2820, we get 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Going ahead to step 11:
284 can be fit into 2640 9 times, resulting in a remainder of 84.
Record the quotient 9 as the next digit in the result. 
Result so far: 154479.299
Subtract 2556 from 2640 to get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

In conclusion, the division gives 154479.299 with a balance of 0.0084.